Jay,

I would take the batteries to a place that can do a load test on the
batteries with a real load. Autozone, Pepboys and walmart should be
able to load test. A starter running with no load is really no load on
a battery. For $20.00 you can buy your own load tester.
http://www.harborfreight.com/cpi/cta...emnumber=90636

for $60.00 you can really drain a battery.
http://www.harborfreight.com/cpi/cta...emnumber=91129

Paul